Bumping gaia.json for 2 gaia-1_2 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_2/rev/9eea2aefa73e
Author: Olav Nymoen <olav@comoyo.com>
Desc: Merge pull request #13180 from comoyo/remove_homescreen_section

Bug 899995: [v1.2] Remove Homescreen section from Settings. r=vingtetun

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https://hg.mozilla.org/integration/gaia-1_2/rev/8de48f77b720
Author: Olav Nymoen <olav@comoyo.com>
Desc: Bug 899995: [v1.2] Remove Homescreen section from Settings. r=vingtetun